{
 "cells": [
  {
   "cell_type": "markdown",
   "id": "37a22237",
   "metadata": {},
   "source": [
    "------\n",
    "* 2022/10/11\n",
    "* python课堂笔记\n",
    "-------"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "f826c509",
   "metadata": {},
   "source": [
    "# 本周内容\n",
    "> 0. 代码的注释\n",
    "> 1. 用户输入\n",
    "> 2. 格式化输出"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "a3afa42e",
   "metadata": {},
   "source": [
    "## 0. 代码的注释\n",
    "> 1. #，一般写在代码块的最上边，或者每一行代码的最后，用于代码思路的记录。"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "id": "9b34f7ee",
   "metadata": {},
   "outputs": [],
   "source": [
    "# Author:liz"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "3e74be61",
   "metadata": {},
   "source": [
    "> 2. \"\"\"注释内容\"\"\"，一般是注释代码块"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "id": "6d0d350c",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "三个引号注释代码内容，不运行\n"
     ]
    }
   ],
   "source": [
    "'''\n",
    "\n",
    "import random\n",
    "wait_time = randint(1,60)\n",
    "ptint(wait_time)\n",
    "\n",
    "word = 'bottle'\n",
    "print(word)\n",
    "'''\n",
    "print(\"三个引号注释代码内容，不运行\")"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "1f496f90",
   "metadata": {},
   "source": [
    "### 1. 用户输入"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "2e3604b6",
   "metadata": {},
   "source": [
    "> 1. input()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "id": "883884bc",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'liz'"
      ]
     },
     "execution_count": 5,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "username"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "id": "b8187356",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "账号：liz\n",
      "密码：123456\n",
      "liz\n",
      "123456\n"
     ]
    }
   ],
   "source": [
    "# 登陆系统\n",
    "username = input(\"账号：\") \n",
    "password = input(\"密码：\")\n",
    "\n",
    "print(username)\n",
    "print(password)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "id": "26b40e36",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "账号：liz\n",
      "密码：123456\n",
      "欢迎liz登录！\n"
     ]
    }
   ],
   "source": [
    "# 登陆系统 迭代1\n",
    "# 假设我们数据库有用户信息，账号：liz，密码：123456\n",
    "user1 = \"liz\"\n",
    "password1 = \"123456\"\n",
    " \n",
    "username = input(\"账号：\")\n",
    "password = input(\"密码：\")\n",
    "\n",
    "# 情景一：输入信息正确，登陆成功\n",
    "if user1 == username and password1 == password:\n",
    "    print(\"欢迎\"+user1+\"登录！\")\n",
    "\n",
    "\n",
    "# 情景二：账号不存在或密码不正确\n",
    "else:\n",
    "    print(\"账号不存在或密码不正确\")\n",
    "\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 12,
   "id": "1bc47258",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "账号：ervve\n",
      "密码：dhuew\n",
      "账号不存在或密码不正确\n",
      "您还有2次尝试机会\n",
      "账号：nincoi\n",
      "密码：joewdi\n",
      "账号不存在或密码不正确\n",
      "您还有1次尝试机会\n",
      "账号：iwenc\n",
      "密码：cidsq\n",
      "三次输入失败，请一小时后再来尝试\n"
     ]
    }
   ],
   "source": [
    "# 登陆系统 迭代2：增加循环功能\n",
    "# 假设我们数据库有用户信息，账号：liz，密码：123456\n",
    "user1 = \"liz\"\n",
    "password1 = \"123456\"\n",
    "\n",
    "for i in range(3,0,-1):\n",
    "    username = input(\"账号：\")\n",
    "    password = input(\"密码：\")\n",
    "\n",
    "    # 情景一：输入信息正确，登陆成功\n",
    "    if user1 == username and password1 == password:\n",
    "        print(\"欢迎\"+user1+\"登录！\")\n",
    "        break  #终止循环\n",
    "\n",
    "    # 情景二：账号不存在或密码不正确\n",
    "    else:\n",
    "        if i == 1:\n",
    "            print(\"三次输入失败，请一小时后再来尝试\")\n",
    "        else:\n",
    "            print(\"账号不存在或密码不正确\")\n",
    "            print(\"您还有\"+str(i-1)+\"次尝试机会\")  #str强制将int转换成str\n",
    "        \n"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "3430edb1",
   "metadata": {},
   "source": [
    "## 2. 格式化输出\n",
    "\n",
    "> 1. 字符串拼接\n",
    "> 2. 占位符\n",
    "> 3. format格式化输出"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 18,
   "id": "b2f4f5ba",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "姓名：liz\n",
      "年龄：20\n",
      "工作：产品设计师\n",
      "收入：50000\n",
      "地区：佛山\n",
      "-----INFO OF liz------\n",
      "年龄：20\n",
      "工作：产品设计师\n",
      "收入：50000\n",
      "地区：佛山\n"
     ]
    }
   ],
   "source": [
    "# 用户注册系统\n",
    "name = input(\"姓名：\")\n",
    "age = input(\"年龄：\")\n",
    "job = input(\"工作：\")\n",
    "salary = input(\"收入：\")\n",
    "reg = input(\"地区：\")\n",
    "\n",
    "info = '''-----INFO OF '''+ name + '''------'''+'''\n",
    "年龄：'''+age+'''\n",
    "工作：'''+job+'''\n",
    "收入：'''+salary+'''\n",
    "地区：'''+reg\n",
    "\n",
    "print(info)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 21,
   "id": "08ef2c22",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "年龄：24\n",
      "24 <class 'str'>\n"
     ]
    }
   ],
   "source": [
    "# input  作为用户输入，其都以字符串形式返回\n",
    "age = input(\"年龄：\")\n",
    "print(age,type(age))\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 25,
   "id": "e9c80281",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "姓名：liz\n",
      "年龄：20\\\n",
      "工作：产品设计师\n",
      "收入：50000\n",
      "地区：广州\n",
      "-----INFO OF liz------\n",
      "年龄：20\\\n",
      "工作：产品设计师\n",
      "收入：50000\n",
      "地区：广州\n"
     ]
    }
   ],
   "source": [
    "# 用户注册系统 方法二：占位符 %s,依次有序输入\n",
    "name = input(\"姓名：\")\n",
    "age = input(\"年龄：\") # 强制将 str 转换为 int\n",
    "job = input(\"工作：\")\n",
    "salary = input(\"收入：\")\n",
    "reg = input(\"地区：\")\n",
    "\n",
    "info = '''-----INFO OF %s------\n",
    "年龄：%s\n",
    "工作：%s\n",
    "收入：%s\n",
    "地区：%s'''%(name,age,job,salary,reg)\n",
    "\n",
    "print(info)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 30,
   "id": "a482cf73",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "姓名：李华\n",
      "年龄：20\n",
      "工作：学生\n",
      "收入：5000\n",
      "地区：广州\n",
      "-----INFO OF 李华------\n",
      "姓名：李华\n",
      "年龄：20\n",
      "工作：学生\n",
      "收入：5000\n",
      "地区：广州\n"
     ]
    }
   ],
   "source": [
    "# 用户注册系统 方法三： format() 格式化输出\n",
    "name = input(\"姓名：\")\n",
    "age = input(\"年龄：\") # 强制将 str 转换为 int\n",
    "job = input(\"工作：\")\n",
    "salary = input(\"收入：\")\n",
    "reg = input(\"地区：\")\n",
    "\n",
    "info = '''-----INFO OF {姓名}------\n",
    "姓名：{姓名}\n",
    "年龄：{年龄}\n",
    "工作：{工作}\n",
    "收入：{收入}\n",
    "地区：{地区}'''.format(年龄 = age,姓名 = name,工作 = job,收入 =salary,地区 = reg)\n",
    "\n",
    "print(info)\n"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "01a32efb",
   "metadata": {},
   "source": [
    "## 课后练习（纳入平时成绩）\n",
    "* 要求：\n",
    "> 1. 运行程序后，让用户输入支付宝余额，然后打印我们的商品列表给用户。\n",
    "> 2. 让用户输入商品编号进行商品购买。\n",
    "> 3. 用户选择商品后，检查用户的余额是否足够，若够则直接付款，不够则提醒用户。\n",
    "> 4. 用户可以随时退出购买，退出时打印用户已购买的商品和支付宝余额。"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "a170b767",
   "metadata": {},
   "outputs": [],
   "source": [
    "#该作业保存在单独一份的文件中，文档名为week08_课后作业"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "27455202",
   "metadata": {},
   "outputs": [],
   "source": []
  }
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